Speed reducing unit



Dec. 10, 1940. A. MUTSICHLER SPEED REDUCING UNIT Filed March 15, 1958Patented Dec. 10, 1940 UNITED STATES PATENT OFFICE 1 Claim.

This invention relates to improvements in speed reducing units to propelhand operated machines such as ice cream freezers, grind stones, smallmeat choppers, cream separators,

etc. using electricity or other motive power.

The use of V type belts makes an eflicient drive, practically noiselessand expensive. The double reduction device is used because it isimpracticable to use a single drive as the motor pulley drive would haveto be too small and the driven pulley too large to reduce the speed froma motor to the speed of a hand operated machine.

Another object is to couple the speed reducing unit to a hand operatedmachine in such a manner that it is impossible for the coupling tobecome disengaged while the machine is in operation and eliminates thenecessity of securing the machine involved, especially convenient in thecase of an ice cream freezer as it can be easily released from theoperating unit when it is desired to remove the top of the freezer.

In the accompanying drawing:

Figure 1 is a side elevation of the invention.

Figure 2 is an end elevation of the same.

5 Figure 3 is a perspective view of the coupling.

Referring to the drawing, 1 indicates a platform on which is removablyattached a motor 2 and an upright support or standard 3, the upper partof which is drilled horizontally adapted to 30 receive spindle 4 one endof which is of smaller diameter, screw threaded to receive a nut 5. Theopposite end of said spindle 4 is of larger diameter and forms a bearingfor double pulley 6 being held in place by pin 1. On the threaded 5 endof spindle 4 is mounted a movable arm 8 slotted at 9 to permit oflateral movement. An adjustable angle plate l0 having an opening in theend of the longer leg adapted to fit over the end of the spindle 4adjacent to the arm 8 4 and the shorter member of angle plate [0extended beyond the end of arm 8 being tapped to receive an adjustingscrew II. The arm 8 and angle plate I0 are held in position by nut 5.

The object of the screw ll is to lengthen or shorten the reach of thearm 8.

The free end of adjustable arm 8 has a hub projecting at right anglesand is drilled laterally to receive and form a bearing for the shaft [2which is secured to pulley 13 by means of set screw I4. Shaft 12 is heldin place by pin l5. A pin IB passes through shaft l2 and projects on twosides of the same and engages slots I! in coupling 18. The free end ofcoupling I 8 is in- 10 teriorly threaded or otherwise machined adaptedto engage the machine to be operated. The coupling is slightly oversizeto give a slight universal effect. The slots I! are cut at angle to theline of drive and when engaged by pin I6 the cou- 15 pling I8 is drawnunto shaft l2 and held thereon while said shaft is in motion. It can bereleased by reversing the shaft.

The device is operated as follows. The large member of the double pulley6 is operated by the 20 motor through the medium of a belt. The smallermember of the doublepulley 6 conveys power to the pulley I3 by means ofa belt. The coupling I1 is connected to the machine to be operated, theheight of the adjustable arm can be regulated by raising or lowering itand held in the desired position by tightening the nut 5. Havingdescribed my invention, what I claim as new and desire to secure byLetters Patent is:

In a device of the class described comprising a standard in the top ofwhich is a-spindle adapted to receive a driving pulley at one end and anadjustable arm at its opposite end, means for securing said drivingpulley and adjustable arm in place, means for lengtheningthe reach ofsaid adjustable arm comprising a longitudinal slot near one end of thesame, an angle plate engaging said slotted arm, an adjustable screwengaging the end of said adjustable arm and angle plate for the purposespecified.

ALBERT H. MUTSCHLER.

